paasing a java ee application


PaaSing a Java EE Application

Kshitiz Saxena Jagadish Ramu


San Francisco September 30–October 4, 2012


The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.


Agenda

• Cloud Computing• PaaS and Java EE• PaaS implications on application deployment• Design Model• Resources


Cloud Computing

Illusion of infinite computing resources available on demand

Elimination of an up-front commitment by cloud users

Ability to pay for use of computing resources on a short-term basis

What’s new?

(+) Above the Clouds, Armbrust et al, UC Berkeley, 2009


Cloud Computing

On-demand Self-Service

Broad network access

Resource Pooling

Rapid Elasticity

Measured Service

Essential Characteristics

(*) NIST Definition of Cloud Computing – 800-145


Cloud Computing

Private Cloud– Operated solely for an organization– On-premise or off-premise

Community Cloud

Public Cloud– Access to general public

Hybrid Cloud– 2 or more clouds, Cloud Bursting

Deployment Models



Cloud Computing

Software as a Service (SaaS)

Platform as a Service (PaaS)– Deploy customer-created applications– Using languages and tools supported by PaaS Provider– No control of underlying cloud infrastructure– Control over deployed applications, hosting env. Configurations

Infrastructure as a Service (IaaS)

Service Models



Program Agenda

Cloud Computing

PaaS and Java EE

PaaS implications on application deployment

Design Model

Resources


PaaS and Java EE

Common programming model for enterprise developers

Runtime handles application’s infrastructure concerns

Declarative resource references

Scalable (scale-out) component models

Java EE design principles and capabilities


PaaS and Java EE

Enhancements– New Roles for PaaS– Services as first class citizens– Multitenancy

Evolution, not a revolution!

Java EE 7: “Making Java EE ready for the cloud”


New PaaS Roles in Java EE 7

PaaS Product Vendor

PaaS Provider

PaaS Account Manager

PaaS Customer

Application Submitter

Application Administrator

End-User


Java EE 7 Roles in a PaaS scenario


Program Agenda

Cloud Computing

PaaS and Java EE


Design Model

Resources


PaaS Implications on Deployment

Simplified PaaS Application Deployment• Single-click, self-service, “push to cloud”



Automatic Service Provisioning and Management– Service Orchestration

• Automatic Service Dependency discovery• Service Provisioning and Association

– Handle operational infrastructure concerns automatically• Network configuration, HA, Clustering, Load Balancing …

– Application and Service deployment versioning

Services Management



Scalable virtualized on-demand environment– Support multiple cloud deployment models

• Public, Private, Hybrid

– PaaS Provider decoupled from IaaS infrastructure– Multi-tenancy

Virtualized runtimes



Automatic Scaling of Services– Scale to application’s needs– User-defined alerts and actions

Control over application hosting environment– Flexibility in choice of application services, framework– Rich service configuration– Shared services– Extensible runtime to allow new Services

Scaling and Operations


A sample application stack


Traditional Java EE Application Deployment


Java EE PaaS Application Deployment


PaaSing a Java EE Application in the Cloud

Demo


Conference Planning in the Cloud


PaaS Deployment for Demo


Program Agenda

Cloud Computing

PaaS and Java EE


Design Model

Resources


Terminology

Service

ServiceType– Java EE, RDBMS, HTTP Load Balancer etc.

Services – scope and lifecycle– Provisioned Services

• Application scoped• Shared

– External (a priori ) services


Specification of Service Metadata

Optional!– When not specified (vanilla EE app archives)

• Orchestration Engine automatically handles discovery of service deps• Automatic wiring to default Service Templates

– Metadata may be specified when:• Finer grain control of application environment desired• Application-specific Service configuration


Design Model


Specification of Service Metadata

Service Definition– Metadata used to provision and configure a Service

• What : Service characteristics (functional and non-functional) → Template matching• How : Explicit Template specification → Template wiring

Service Reference– An application component’s dependency on a Service

• Explicit : User-specified through deployment descriptors• Implicit and Discovered: Information contained within the archive


Service Dependency Specification


Sample Service Definition


Sample Service Reference


GlassFish PaaS Runtime Architecture


Service Orchestration Flow


Program Agenda

Cloud Computing

PaaS and Java EE


Design Model

Resources


Resources

GlassFish 4.0 http://download.java.net/glassfish/4.0/promoted/– Spec http://bit.ly/sAZtEL– Java EE 7 keynote demo http://bit.ly/q9T7Z2

Java EE 7 http://jcp.org//en/jsr/detail?id=342– PaaS Model http://bit.ly/o3XZIP

Above the Clouds: A Berkeley View of Cloud Computing http://bit.ly/15MEL0

The NIST Definition of Cloud Computing -- Special Publication 800-145 http://1.usa.gov/ohXnlM

For more information

http://download.java.net/glassfish/4.0/promoted/

http://bit.ly/sAZtEL

http://bit.ly/q9T7Z2

http://jcp.org/en/jsr/detail?id=342

http://bit.ly/o3XZIP

http://bit.ly/15MEL0

http://1.usa.gov/ohXnlM


Q&A


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